Vertically oriented nanoporous block copolymer membranes for oil/water separation and filtration

Vertically oriented block copolymer nanocylinders (left) and after etching to form nanoporous membrane (right), for separation of oil from water and filtration of aqueous solutions and dispersions to treat waste and contaminated water.

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Surface-Modified Nanoporous Membrane for Oil–Water Separation

Water Air & Soil Pollution ◽

10.1007/s11270-021-05493-6 ◽

2022 ◽

Vol 233 (1) ◽

Author(s):

Arthi Karunanithi ◽

Jyotiraman De ◽

Sumit Saxena ◽

Shobha Shukla

Keyword(s):

Water Separation ◽

Nanoporous Membrane ◽

Oil Water Separation ◽

Oil Water ◽

Surface Modified

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High-flux underwater superoleophobic hybrid membranes for effective oil–water separation from oil-contaminated water

RSC Advances ◽

10.1039/c6ra27124c ◽

2017 ◽

Vol 7 (15) ◽

pp. 9051-9056 ◽

Cited By ~ 13

Author(s):

Minxiang Zeng ◽

Baoliang Peng ◽

Carlos Ybanez ◽

Nian Wei Tan ◽

Ehab Abo Deeb ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Separation Efficiency ◽

Contaminated Water ◽

Hybrid Membranes ◽

High Flux ◽

Water Separation ◽

Oil Water Separation ◽

Oil Water ◽

Filter Papers ◽

Tolylene Diisocyanate

The pristine filter papers were crosslinked with polyvinyl alcohol by tolylene diisocyanate, leading to a superoleophobic surface which enables excellent oil–water separation efficiency.

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Oil/Water Separation: Table Salt as a Template to Prepare Reusable Porous PVDF-MWCNT Foam for Separation of Immiscible Oils/Organic Solvents and Corrosive Aqueous Solutions (Adv. Funct. Mater. 41/2017)

Advanced Functional Materials ◽

10.1002/adfm.201770241 ◽

2017 ◽

Vol 27 (41) ◽

Cited By ~ 1

Author(s):

Faze Chen ◽

Yao Lu ◽

Xin Liu ◽

Jinlong Song ◽

Guanjie He ◽

...

Keyword(s):

Aqueous Solutions ◽

Organic Solvents ◽

Table Salt ◽

Water Separation ◽

Oil Water Separation ◽

Oil Water

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Adsorption and superficial transport of oil on biological and bionic superhydrophobic surfaces: a novel technique for oil–water separation

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2019.0447 ◽

2020 ◽

Vol 378 (2167) ◽

pp. 20190447

Author(s):

W. Barthlott ◽

M. Moosmann ◽

I. Noll ◽

M. Akdere ◽

J. Wagner ◽

...

Keyword(s):

Oil Spills ◽

Superhydrophobic Surfaces ◽

Contaminated Water ◽

Theme Issue ◽

External Energy ◽

Water Separation ◽

Lotus Effect ◽

Oil Water Separation ◽

Air Layers ◽

Oil Water

Superhydrophobicity is a physical feature of surfaces occurring in many organisms and has been applied (e.g. lotus effect) in bionic technical applications. Some aquatic species are able to maintain persistent air layers under water ( Salvinia effect) and thus become increasingly interesting for drag reduction and other ‘bioinspired’ applications. However, another feature of superhydrophobic surfaces, i.e. the adsorption (not absorption) and subsequent superficial transportation and desorption capability for oil, has been neglected. Intense research is currently being carried out on oil-absorbing bulk materials like sponges, focusing on oleophilic surfaces and meshes to build membranes for oil–water separation. This requires an active pumping of oil–water mixtures onto or through the surface. Here, we present a novel passive, self-driven technology to remove oil from water surfaces. The oil is adsorbed onto a superhydrophobic material (e.g. textiles) and transported on its surface. Vertical and horizontal transportation is possible above or below the oil-contaminated water surface. The transfer in a bioinspired novel bionic oil adsorber is described. The oil is transported into a container and thus removed from the surface. Prototypes have proven to be an efficient and environmentally friendly technology to clean oil spills from water without chemicals or external energy supply. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology (part 3)’.

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